iOS 9 has some bugs that Apple didn’t bothered to fix. Those bugs may help to gain unauthorized access to idevice using Siri services. That security flaws may cause personal data loss. Or in worst scenario, it can be used for bad intentions.
The method given below only works when Siri is enabled. It was tested on iPhone 5, 5s, 6, 6s and iPad Mini 1, 2 models running iOS 9, 9.0, 9.1 and 9.2.1.